Storage system with performance life evaluation based on SD card and storage method thereof

Abstract

The invention relates to a storage system with performance life evaluation based on an SD card. The storage system is characterized in that a core control module of the storage system receives data sent by external equipment and drives the SD card to read and write the data; and during storage of data, the core control module skips to the functional index area according to the functional index area head address of the guide area to obtain the head addresses of the sector shielding area, the data writing index area and the data storage area, obtains last data writing head and tail addresses according to the content of the data writing index area, adds 1 to the tail address to serve as the head address of the current data writing, writes the data into the data storage area, and skips to theaddress of a damaged or performance-substandard sector when the data is written while adding 1 to the number of complete writing times of the SD card every time the data is completely written into theSD card. The storage system can evaluate the physical sector performance of the SD card, can shield damaged sectors with low performance to improve the storage speed, and meanwhile, can obtain the state of the SD card according to the number of times of complete writing, so as to guarantee safe and reliable storage of data.

Description

Technical field: [0001] The invention belongs to the technical field of data storage, and in particular relates to an SD card-based storage system with performance life evaluation and a storage method thereof, which use an SD card as a storage medium. Background technique: [0002] SD memory card (Secure Digital Card) is a new generation memory device based on semiconductor flash memory. It has the characteristics of small size, large capacity and fast data transmission speed, and is widely used in portable devices. [0003] Flash memory, referred to as flash memory, is a form of electronic erasable programmable read-only memory. According to the density of electronic units in flash memory, it can be divided into: SLC (single-level storage unit), MLC (double-layer storage unit), TLC (three-level storage unit) and QLC (four-layer storage unit), from SLC to QLC, cost reduction, The capacity increases but the speed becomes slower and the life span is reduced. At this stage, t...

AI Technical Summary

Problems solved by technology

[0005] The important thing is that the current ground-air electromagnetic detection embedded receiving system has a small buffer and no SD card life evaluation function. Once the SD card encounters too many damaged sectors or the SD card write times reach the maximum limit, the user Failure to obtain the current status of the SD card in time, and failure to replace the SD card in time will result in data loss during flight detection

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